The article presents intersectoral partnerships forming Local Action Groups, and analyzes the mechanisms of emergence of such partnerships in the Podkarpackie region, particularly factors contributing to their emergence, their initiators and partner-recruitment methods, as well as the relations of partnerships with their social milieu, decision-making inside partnerships and expectations regarding their future. The theoretical framework of the study is rooted in the neoinstitutional theory with its historical, normative, rational-choice and network approaches. Based on them, the authors formulate some hypotheses referring to the innovativeness of the partnerships, the supremacy of local authorities over other partners, the utilitarian character of partnerships and the assumptions concerning their future. The hypotheses are then verified on the basis of the results of quantitative research of Local Action Groups in the Podkarpackie region.